title: Contributions of reinforcement schedule histories to our understanding of drug effects in human subjects.
abstract: Like other reinforcing stimuli, drug effects may vary with the reinforcement history of an individual. Data are presented which demonstrate that histories contribute to individual differences in response to reinforcement contingencies and modification of maladaptive behavioral persistence. Possible relevance of these findings to an understanding of drug effects in humans is discussed.
mesh_terms: D000328:Adult; D001519:Behavior / Q000187:drug effects*; D003216:Conditioning, Operant; D006801:Humans; D012054:Reinforcement, Psychology; D019966:Substance-Related Disorders